Infrared Thermometer Use Method and Common Sense

Because the infrared thermometer will be interfered by factors such as weather environment and human improper operation during use, it will directly affect the screening of fever personnel. In order to ensure the effective use of infrared thermometer, infrared temperature gun supplier to share this article for you.

What is an infrared thermometer: It is to identify high-temperature personnel through the front-end infrared machine, and the recognition efficiency is high, and the face-assisted temperature sense of the non-contact intensive crowd is solved to solve the passing efficiency and controllability in public places.

1. Infrared Thermometer cannot measure temperature through glass. Glass has very special reflection and transmission characteristics, and does not allow accurate infrared temperature readings. But the temperature can be measured through the infrared window. Infrared thermometers are best not used for temperature measurement on shiny or polished metal surfaces (stainless steel, aluminum, etc.).

2. Infrared thermometer can only measure the surface temperature of an object, not its internal temperature.

3. Carefully locate the hot spot, find the hot spot, use it to aim at the target, and then do the up and down scanning movement on the target until the hot spot is determined.

4. When we use, we should pay attention to environmental conditions: smoke, steam, dust, etc. They will block the optical system of the instrument and affect the accurate temperature measurement.

5. When using an infrared thermometer, pay attention to the ambient temperature. If it is suddenly exposed to an ambient temperature difference of 20 degrees or higher, allow the instrument to adjust to the new ambient temperature within 20 minutes.

When using the best infrared thermometer to measure the temperature, the infrared energy emitted by the measured object is converted into an electrical signal on the detector by the optical system of the infrared thermometer, and the temperature reading of the signal It shows that there are several important factors that determine the accurate temperature measurement. The most important factors are the emissivity, the field of view, the distance to the light spot and the position of the light spot. Emissivity, all objects reflect, transmit and emit energy, and only the emitted energy can indicate the temperature of the object. When the infrared thermometer measures the surface temperature, the instrument can receive all three kinds of energy. Therefore, all infrared thermometers must be adjusted to read only the emitted energy. Measurement errors are usually caused by infrared energy reflected from other light sources. Some infrared thermometers can change the emissivity, and the emissivity values of various materials can be found in the published emissivity table. Other instruments have a fixed emissivity of 0.95. The emissivity value is the surface temperature of most organic materials, paints, or oxidized surfaces, and it is necessary to apply a tape or flat black paint to the surface to be compensated. When the tape or paint reaches the same temperature as the base material, the temperature of the tape or paint surface is measured, which is its true temperature. The ratio of the distance to the light spot. The optical system of the infrared thermometer collects energy from the circular measuring spot and focuses it on the detector. The optical resolution is defined as the ratio of the distance between the infrared thermometer and the object and the size of the measured spot (D :S). The larger the ratio, the better the resolution of the infrared thermometer and the smaller the spot size to be measured. Laser aiming is only used to help aim at the measuring point. The latest improvement in infrared optics is the addition of near-focus characteristics to provide accurate measurement of small target areas and prevent the influence of background temperature. Field of view to ensure that the target is larger than the spot size measured by the infrared thermometer. The smaller the target, the closer it should be. When accuracy is particularly important, make sure that the target is at least twice the spot size.